Furniture spine unit



FIG. 1 is front perspective view of a furniture spine unit in accordancewith my new design;

FIG. 2 is a front/rear side view thereof, it being understood that thefront and rear side views are identical;

FIG. 3 is a left/right end view thereof, it being understood that theleft and right end views are identical; and,

FIG. 4 is a top view thereof.

Features shown in broken lines form no part of the claimed design.

CLAIM The ornamental design for a furniture spine unit, as shown anddescribed.